End member assemblies having a longitudinal axis are dimensioned for securement to a flexible spring member. The end member assemblies include a first end member with a first surface portion and a plurality of projections disposed in peripherally-spaced relation to one another about the longitudinal axis. A second end member includes a plurality of grooves dimensioned to receive one of projections. Gas spring and damper assemblies include a damper assembly and a gas spring assembly that includes an end member assembly as well as an end member assembly with a flexible spring member secured between the end member assemblies. A suspension system including one or more gas spring and damper assemblies is also included.

A clamping plate is dimensioned to secure a flexible spring member to an end member for forming a gas spring assembly. The clamping plate includes a clamping plate wall with an axis and opposing surface portions oriented transverse to the axis. An opening extends into the clamping plate wall from along each of the opposing surface portions. An elongated damping passage extends in a spiral configuration through the clamping plate wall in fluid communication with the openings. A gas spring assembly includes a flexible spring member that defines a spring chamber, and an end member with an end member wall that defines an end member chamber. The clamping plate is secured to the end member and retains the flexible spring member thereon. The elongated damping passage is in fluid communication between the spring chamber and the end member chamber. Gas transfer between the spring chamber and the end member chamber generates pressurized gas damping during use of the gas spring assembly. Suspension systems and methods are also included.

End members are supportable along a damper housing and dimensioned for securement to a flexible spring member. The end members include a wall with a first wall portion having an outer surface portion dimensioned to receivingly engage the flexible spring member. A second wall portion includes an inner surface portion dimensioned to receivingly engage a torsional isolator supported on the damper housing. A third wall portion extends radially outward beyond the second wall portion and includes a passage surface at least partially defining a passage extending axially through the third wall portion. The passage is dimensioned to receive a projection of the torsional isolator. End member assemblies including such an end member as well as gas spring and damper assemblies and suspension systems are also included.

An air spring having at least one composite part is provided. The air spring will have a top plate, a flexible sleeve, and a clamp ring coupled together by an injection molded collar. The injection molded collar will be formed to hold the top plate, flexible sleeve, and clamp ring in compression to form an air tight seal. In certain aspects, the top plate and/or the clamp ring may be formed from composites or metals.

End members are supportable along a damper housing and dimensioned for securement to flexible spring member. End members include a wall with a side wall portion including an inner side surface portion. First projections extend toward a first inner edge with a first shoulder surface portion faces a second end. Second projections extend inward beyond the inner side surface portion toward a second inner edge with a second shoulder surface portion facing a first end. Second projections are spaced axially from first projections such that a groove is formed inward of the inner side surface portion between first and second shoulder surface portions. End member assemblies including such an end member as well as gas spring and damper assemblies and suspension systems are also included.

Lateral support elements include an element wall with an exterior surface dimensioned to abuttingly engage an associated flexible wall and an interior surface that at least partially defines an element chamber within the lateral supporting element. Gas spring assemblies include a flexible spring member that at least partially defines a spring chamber. The lateral support element is disposed along and operatively connected to the flexible spring member. The element chamber can, optionally and in some cases, be disposed in fluid communication with the spring chamber. The gas spring assembly can include one or more end members operatively connected to the flexible spring member. Suspension systems and methods of assembly are also included.

A pneumatic spring strut for a vehicle is provided including a hydraulic cylinder having a lower end for connection with a suspension system of the vehicle; a hydraulic piston slidably mounted within the hydraulic cylinder; a piston rod connected with the hydraulic piston; a pneumatic spring mount body connected with the hydraulic cylinder; a pneumatic spring bellows having a lower in connected with the pneumatic spring mount body; a top cap encircling the piston rod and being connected with a top end of the spring bellows, and a closing cover twist lock connected with the top cap.

An air suspension strut for a motor vehicle comprises an air spring having an air spring cover and a rolling piston. A shock damper is integrated with the air spring and has a damper tube and a piston rod receivable within the damper tube. A rolling bellows is secured between the spring cover and the rolling piston thereby delimiting a variable volume pressure chamber filled with compressed air. The rolling bellows rolls on the rolling piston with a rolling fold being formed. A damper bearing is accommodated in a bearing socket of the air spring cover and connected to the piston rod. The damper bearing comprises a supporting piece, an elastomer body, and a sleeve. A closure element inserted in the bearing socket above the damper bearing. An elastic element arranged between the sleeve and the closure element.

A spring assembly for a vehicle is provided. The spring assembly may include a piston, and a sleeve with a noncircular cross section, the sleeve made from an unreinforced synthetic elastomeric material and being free of reinforcing fibers. The sleeve is coupled with a plurality of end components and defines a deformable pressure vessel, the deformable pressure vessel supplies a support force, and at least one of the end components is the piston.

A vibration isolator (10) for supporting a payload and isolating the payload from vibrations has: a pressurized gas compartment (24) formed with a rigid base structure (28), which base structure has an opening (32) covered with a flexible membrane (20) having an inner surface (21) facing into the gas compartment and an outer surface (22) facing in the opposite direction, a support member (12) for supporting the payload, which support member is arranged in contact with the outer surface (22) of the membrane, and a clamping member (62) arranged at the inner surface (21) of the membrane, wherein the support member and the clamping member form a clamping system (66), which system includes at least one magnetic element (64) effecting the membrane to be pressed against the support member.